In the course of this work I have tried to provide all and only the information in my possession that is useful for the production and evaluation of a dietary protocol for athletic purposes. I have deliberately neglected to dwell on some aspects that, although normally covered in courses on nutrition and dietetics, cannot be used in practice by the athlete who wishes to improve his performance. Nonetheless, there is some information that, although it can be translated into practice only with great difficulty (for example because it concerns measuring mechanisms with expensive contraptions), can still be useful to those who manage to get the better of it. Other information is only indirectly related to physical performance. For example, all that concerns correct hygienic practices related to cooking and food preservation can contribute to a better health condition that, on the one hand, can also indirectly influence athletic performance, but on the other will contribute to extending the athletic life of the individual who uses it. Other information, although not of capital importance, can constitute a useful complement to that already provided. Well, all this (not a little) information has been inserted in the appendices that follow, at the final end of the work.